package com.contain.collection.map;

import java.util.HashMap;

public class HashMap_01 {
    public static void main(String[] args) {
        HashMap<String,String> hashMap = new HashMap<>() ;
        hashMap.put("hello","你好");
        hashMap.put("world","世界");
        hashMap.remove("hello");
        hashMap.get("world");
        System.out.println(hashMap);
    }
}
